I used to never have cramping issues until this season. My quads have been cramping on rides with lots of climbing. It happened during the Blue Ridge Extreme, and also my calf, and it happened during the Civil War Century.

I am now wondering if this is related, since the tingling/vibrating sensation was near my quads.

Anyway, back at work for three days and the lower back discomfort is subsiding by the day. Felling reasonably good right now and I will be on the trainer or a recumbent this weekend to see if I can spin for a long spell....